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Revo
  • Member for 12 years, 11 months
  • Last seen more than 9 years ago
182 votes
5 answers
25k views

Gauge symmetry is not a symmetry?

117 votes
15 answers
19k views

Why can't $ i\hbar\frac{\partial}{\partial t}$ be considered the Hamiltonian operator?

93 votes
9 answers
51k views

Are matrices and second rank tensors the same thing?

67 votes
8 answers
20k views

Why not use the Lagrangian, instead of the Hamiltonian, in nonrelativistic QM?

56 votes
6 answers
140k views

In electrostatics, why the electric field inside a conductor is zero?

56 votes
7 answers
5k views

In quantum mechanics, given certain energy spectrum can one generate the corresponding potential?

55 votes
7 answers
10k views

Is mass an observable in Quantum Mechanics?

45 votes
2 answers
18k views

Does the speed of light vary in non-inertial frames?

28 votes
8 answers
6k views

Paradox with Gauss' law when space is uniformly charged everywhere

27 votes
2 answers
19k views

Why Silver atoms were used in Stern-Gerlach experiment?

27 votes
5 answers
5k views

What is the physical meaning of a "complete" Hilbert space in QM?

24 votes
5 answers
9k views

Why position is not quantized in quantum mechanics?

23 votes
3 answers
152k views

Different batteries connected in parallel

22 votes
6 answers
48k views

Why the electric potential of Earth is zero?

22 votes
4 answers
14k views

Is a 1D vector also a scalar?

22 votes
4 answers
115k views

What makes some laser beams visible and other laser beams invisible?

21 votes
2 answers
74k views

How does the grid on the microwave oven window prevent microwave radiation from coming out?

20 votes
1 answer
18k views

Can you magnetize iron with a hammer?

20 votes
9 answers
5k views

In dimensional analysis, why the dimensionless constant is usually of order 1?

19 votes
2 answers
4k views

Was the universe a black hole at the beginning?

19 votes
4 answers
4k views

How does non-Hermitian quantum mechanics (PT-symmetric QM) fit in physics?

19 votes
4 answers
5k views

Since there are gravitational lenses, are there gravitational mirrors?

16 votes
6 answers
40k views

Why is the conductor an equipotential surface in electrostatics?

16 votes
1 answer
5k views

What is a quark condensate?

14 votes
1 answer
791 views

How come random matrices can predict energy spectra of heavy atoms?

14 votes
4 answers
1k views

Is a superconductor really a super conductor?

14 votes
3 answers
2k views

Bound states in QCD: Why only bound states of 2 or 3 quarks and not more?

13 votes
2 answers
580 views

Can $10^{23}$ stars be treated with methods of statistical mechanics?

13 votes
2 answers
3k views

If you run an electric current through a wire loop, do the accelerated charges radiate?

13 votes
2 answers
4k views

Sources to learn about Greens functions

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